Destroying superconductivity in a material requires the breaking of the cooper pairs. There are at least two ways to do this: heat the system to the point that the thermal energy is equal to the binding energy of the cooper pairs,
or the absorbtion of electromagnetic radiation of frequency w such that hbarw ~binding energy.
There are more than 2 ways to destroy superconductivity, others include
ReplyDelete- a large current
- a large magnetic field
- add magnetic impurities
As far as I concern that superconductivity is used to create magteic levitation and there is no electric resistant. How can a large current or magnetic field destroy it? Can you please let me know more about that?
ReplyDeleteCoopers pair formation follows the law of conservation of momentum without the loss of energy, as momentum is transferred to other electron due to photon bumping,which results the motion in electron, since photons are quantised materials so all the momentum is transferred. In this process the lattice doesnot hold any momentum so electrons donot experience any energy loss to lattice hence, there is no resisitance.
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